Tunnel void detection device

Abstract

The utility model relates to a tunnel void detection device, and relates to the technical field of tunnel detection. The tunnel void detection device comprises a housing, a hammer body, a sound pickup assembly, a driving assembly and a hammer head, two ends of the housing are opened, the hammer body is connected with a first end of the housing and protrudes out of the housing, a first through hole is arranged on the hammer body, the sound pickup assembly is arranged on the hammer body, the driving assembly is arranged in the housing and is connected with the hammer body, and the hammer head is arranged in the housing. The hammer head is arranged on the driving assembly, the driving assembly drives the hammer head to reciprocate, and the hammer head can penetrate through the first through hole. The driving assembly drives the hammer head to reciprocate, so that the hammer head can penetrate through the first through hole formed in the hammer body, the tunnel lining is automatically and continuously knocked, knocking sound is collected through the sound pickup assembly arranged on the hammer body, manual sound listening for analysis is not needed, the detection efficiency is high, and the result is more accurate.

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